GZD15, WSM ELECTRICAL SYSYTEM
5-M8
[2] GLOW PLUG
This plug is a two-material type QGS (Quick Glow
System) for quick temperature rise, and has self-
controlling function as well as excellent durability.
The heater (4) connected in series to the heater (3),
which also functions as the resistor, is incorporated in
the sheath tube (1) of the super glow plug.
The resistance of this heater (3) cum resistor is small
when the temperature is low, while the resistance
becomes large when the temperature rises.
Therefore, because sufficient current is flown to the
heater (4) during the initial period of energization, the
temperature rises quickly and the resistance grows with
the rise in the temperature of the resistor, the flowing
current is reduces to prevent the heater (4) from being
heated.
The ignition point is in the area of 2 to 3 mm (0.079 to
0.118 in.) from the tip of the plug in order to reduce its
projection into the combustion chamber.
[3] SAFETY SWITCH (LIMIT SWITCH)
The safety switch prevents current from flowing to the
starter when the safety switches are not depressed.
This is to ensure safe starting or stopping.
The safety switches are located on five (parking brake
lever, motion control lever, operator's seat, PTO lever
and grass collector) different positions.
(1) Sheath Tube (a) Glow Plug Temperature
(2) Insulation Powder ()
(3) Heater also functioning as (b) Current (A)
as a Resistor (c) Time (Sec.)
(4) Heater
(5) Super Glow Plug
(6) Conventional Quick-
heating type Glow Plug
(7) Glow Plug Current
0000001515E
0000001516E
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